Ball-cock for tanks.



No. 756,538. PATENTBD APR. 5,1904. E'. C. SMITH.

.BALL COCK FOR TANKS.

AEELIOATION EILED JUNE 20,1903.

'No MODEL.

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UNITED STATES Patented April 5, 1904.

FRANKLIN C. SMITH, OF NEW BEDFORD,MASSACHUSETTS.

BALL-COCK FOR TANKS.

SPECIFIGATICN forming part of Letters Patent No. r756,538, dated April5, 1904.

Application filed Tune 20, 1903.

To all whom it may concern:

Be it known that I, FRANKLIN C. SMITH, a citizen of the United States,residing at New Bedford, in the county of Bristol and State ofMassachusetts, have invented new and useful Improvements in Ball-Cocksfor Tanks, of which the following is a specification.

The invention relates to a shut-off valve or ball-cock for tanks, theobject of the invention being to provide a ball-cock which will quicklyopen the valve toits full extent and will close said valve quicklyduring the latter part of the upward movement of the ball-float, thelarger part of the upward movement of said ball-float having no effectupon the valve proper.

The invention consists in a device of the character described,comprising in its construction an inlet-pipe, a valve-lever pivotedthereto, a valve constructed to open or close said inlet-pipe, saidvalve connected to said lever at one side of the pivot thereof, arocking holder pivoted to said lever at the opposite side of said pivotfrom that to which said valve is connected, and an arm fast to saidrocking holder and constructed to abut against said lever.

The invention further consists in the instrumentalities hereinbefore setforth, together with an arm, preferably adjustably fastened to saidrocking holder and constructed to abut against said valve-lever.

The invention finally consists in the combination and arrangement ofparts set forth in the following specification and particularly pointedout in the claims thereof.

Referring to the drawings, Figure 1 is a longitudinal section of a tankwith my improved ball-cock, shown in elevation, attached thereto. Fig. 2is an enlarged vertical central section of my improved ball-cock, partlyin elevation, the ball-float and arm to which the ball-float is attachedbeing broken away to save space in the drawings.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, 5 is a tank of any suitable construction, and 6 is aninlet-pipe projecting through the bottom of the tank 5. The portion ofsaid inlet-pipe which projects outside Serial-No. 162,360. (No model.)

the flanged supply-pipe 8 against a washer 9,'

said washer 9 being thus clamped against the end of the inlet-pipe 6 andforminga seat for' the valve 10. The valve 1'0 has fast thereto a? stem11, provided with wings 12 12, projecting laterally therefrom andbearing against the interior of the inlet-pipe 6, acting asa guide forsaid valve. The upper end of the valvestem 11 projects through a holeformed in the end of the inlet-pipe 6 and is connected by a pin 13 to avalve-lever 14, pivoted at 15 to an arm 16, integral with the upper endof the inlet-pipe 6. The inlet-pipe 6 is provided with an outlet 17,which when the inlet-pipe is fastened to the bottom of the tank ispreferably turned downward, so that the water as it discharges into thetank will be directed against the bottom thereof. A stop 18 is providedupon the arm 16, which limits the distance to which the lever 14 canrock upon its pivot 15. A rocking holder 19 is pivoted at 20 to thevalve-lever 14 upon the opposite side of the pivot 15 to that at whichthe valvestem 11 is connected to said lever 14. An arm 21 is adjustablyfastened to the rocking holder 19 by a thumb-screw 22, the outer or freeend of said arm being constructed to bear against the lever 14 when saidlever is in the position shown in fulllines in Figs. 1 and 2.

A ball-float 23, of the usual construction, is attached to an arm 24,said arm being fastened by a thumb-screw 25 to the rocking holder 10.

The operation of my improved ball-cock, hereinbefore specificallydescribed, is as follows: Assuming the valve 10 to be closed, as shownin Fig. 2,'the valve-lever 14 will then be in the position indicated infull lines in Figs. 1 and 2. When water is drawn from the tank in theusual manner well known to those Y skilled in this art, the ball-floatdescends from the position shown in full lines to that shown in dottedlines. During the first portion of raised by the pressure of the waterin the pipe 8. As the water Continues to be drawn from the tank the ball23 descends: to the position shown in dotted lines, Fig. 1, and therocking holder 19, together with the arm 2l, assumes the position shownin dotted lines in said Fig. 1. Now as water is admitted to the tank theball 23v asoends fromV the position shown in dotted lines to that shownin full lines, and it is evident thatl thek lever 14 will remain in theposition shown'in dotted lines, Fig. 1, and the valve remain open untilthe ball 23 has risen to a sufficient height to tip the rocking holder19 upon its pivot 20 and cause the free end of the arm 21 to abutagainst the upper face of the lever 14:. This will be atthe latter endof the rising motion of the ball 23, so that it will be evident that theval-ve 10 will be wide open and will remain stationary until the ball 23is at the latter end of its rising movement. It will also beevident thatthe time at which the valve 10 beginsto Close may be regulated byadjusting the arm 21 toward or away from the lever 14 by means of thethumb-screw 22.

Having thus described my invention', whatn I claim, and desire byLetters Patent to se- Cure, is-

1. A ball-oook for tanks comprising in its Construction an inlet-pipe, avalve-lever pivoted thereto, a valve connected to said lever at one sideof the pivot thereof, a rocking holder pivoted to said lever at theopposite against said valve-lever, and means to adjust. y

said arm with relation to said valve-lever.

In testimony whereof I have hereunto set lmy hand in presence of twosubscribing witnesses. v FRANKLIN C. SMITH.

Witnesses:

FREDERIC A. WAsHBURN, REBECCA M. HOWARD.`

